Hardware Spec Index

Zephyra CL-3963 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3963-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index1,114 (CPU Coolers scale)
Category rank#27,178
Street price$39
Power12 W
Performance per dollar28.56
Released2023

Specifications

BrandZephyra
ModelZephyra CL-3963 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 38 mm thick
Fans2× 120 mm, up to 2,400 RPM
Pump2,900 RPM
Rated cooling250 W (manufacturer rating)
Noise25 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

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Cite this page: Hardware Spec Index, “Zephyra CL-3963 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/96523825 (accessed 2026-10-21).